Views of a new American bomber - it has floats and wheels.
Full title reads: "US Navy Mystery Plane".
Anacostia Naval Base, Maryland, United States of America (USA).
Various good shots of the amphibious version of a Consolidated PBY-5A Catalina flying boat. landing at an American naval airfield. Various closer shots showing how the wheels and floats retract into the machine to change it back into a normal Catalina flying boat.
Paperwork suggests that this plane is given the code number - XBBY5A - and that it is a long range bomber.
N.B. Item found in Unidentified Gazettes reel. Dupe of item from 40/7 (Film ID 1033.33)